2010 Mazda 3 I Sedan 4-door 2.0l on 2040-cars

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This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

2018 Mazda6 refresh takes the car further upmarket

The 2018 Mazda6 is, on the surface, a very mild refresh. The front grille has been given more depth, and the fascia is generally cleaned up a bit, putting the design inline with the new CX-5 and future Mazda products. The interior has been given the same treatment: cleaned up and modernized. But throughout the car, some important updates under the skin make the 6 a more compelling product, and one that continues the company's push upmarket. The biggest change has already been partly revealed, and that's the addition of Mazda's turbocharged 2.5-liter four-cylinder. It's the same engine found in the CX-9, and Mazda has now revealed it will make the same 250 horsepower and 310 pound-feet of torque with premium fuel. The engine will also happily accept 87-octane, in which case the engine will make 227 horsepower. Though the addition of this engine is welcome, we're a bit disappointed to learn that it will only be available with a six-speed automatic transmission. If we're lucky, we might see Mazda add a manual option, since when Mazda launched the current Mazda3, the larger 2.5-liter engine was initially only available with an automatic. But try not to get your hopes up too high, either. The good news is that Mazda will continue to offer a manual transmission as well as an automatic with the base, naturally aspirated 2.5-liter four-cylinder. This engine will now feature cylinder deactivation, as will the 2018 Mazda CX-5. This system will shut off the cylinders on each end at cruising speed to improve fuel economy. Official fuel economy ratings for both engines have yet to be released. Aside from the powertrain, Mazda says it has made a few other mechanical improvements. The suspension has been retuned, and the steering rack rigidly mounted to the chassis to improve handling. Thicker sheet metal for the rear wheel wells, thicker trailing arms, and a bevy of braces have also been added in order to reduce noise for a more refined driving experience. The interior has also been updated for more refinement, particularly on the new Signature trim model. The sleeker interior design on all Mazda6s is joined by redesigned seats Mazda says are more comfortable. Those seats are now available with optional ventilation. A windshield-projected heads-up display, adaptive cruise control that can bring the car to a stop and resume accelerating, as well as an instrument panel with a configurable 7-inch screen are other options.

Mazda Hazumi Concept previews next Mazda2 in Geneva [w/videos]

The official photos of Mazda's Hazumi concept leaked out yesterday, but we have finally gotten to see it in real life at the Geneva Motor Show. Our view is that its Kodo lines looks as good on the diminutive car's sheet metal as they did in photos.
The Hazumi was designed to appear to be bursting with energy, and it seems to deliver. While Mazda refuses to actually say that this is the concept for the next Mazda2, it makes it clear that the little hatchback is "foreshadowing Mazda's next-generation subcompact car." We can all read between the lines.
Hazumi also introduces the new Skyactiv-D 1.5-liter diesel engine but details about it are scant at the moment. The specs for the engine are still unannounced, but the company promises that it is both very efficient and has lots of torque for its size. Mazda is also promising that its Mazda Connect infotainment system will be available in the car too. Scroll down for the brief press release a brace of videos that celebrate the tiny concept's arrival.